看了网上的，很多都是监听键盘删除，那样的方法很不好，而且太麻烦
看看我设置的，直接是3-4-4格式的展示和删除的使用，这几行代码就可以
pragma mark -- PhoneFormat
-
(BOOL)PhoneFormatTextField:(UITextField *)textField string:(NSString *)string rang:(NSRange)range
{
NSString textt = textField.text;
textt = [textt stringByReplacingCharactersInRange:range withString:string];
NSMutableString texttitle=[[NSMutableString alloc]initWithString:textt];if ([self.accountTextfield.text length] <= texttitle.length) // 判断删除操作
{
if (texttitle.length == 4) {
[texttitle insertString:@"-"atIndex:3];
}else if (texttitle.length == 9){
[texttitle insertString:@"-"atIndex:8];
}if (texttitle.length == 13) { [self.loginButton setImage:[UIImage imageNamed:@"确定可操作button"] forState:UIControlStateNormal]; self.loginButton.userInteractionEnabled = YES; return YES; }}
if (texttitle.length >13) {
return NO;
}
[textField setText:texttitle];
[self.loginButton setImage:[UIImage imageNamed:@"zhihuiButtonlogin"] forState:UIControlStateNormal];
self.loginButton.userInteractionEnabled = NO;
return NO;
}
